Nortel T7406 - Manual (Page 7)

Provisioning the T7406 / 7
T7406 Installation Guide
Provisioning the T7406
This chapter provides specification and provisioning information for
the T7406 cordless system.
The T7406 is a Frequency Hopping Spread Spectrum (FHSS) cordless
telephone. The benefits of this technology are: improved range,
robustness and, less susceptibility to interference, fading and multipath.
The use of a common wall-mounted base station for multiple handsets
allows you to position the base antennas for maximum performance and
coverage. The indoor range of the T7406 is 95 meters (300 feet) in a
typical office environment. This range may vary with differing
environments.
Operational Bandwidths
The T7406 cordless telephone operates in the ISM (Industrial,
Scientific, and Medical) 902-928 MHz band. The T7406 divides the
ISM band into two sets of operating frequencies to allow the
coexistence of other ISM devices. Examples of these products are SKU
scanners and remote controls for products such as garage door openers
and home theatre systems. Note that, since the T7406 is a frequency
hopper, it uses at least half of the available frequencies in the ISM band
for operation and can make it difficult for other 900 MHz devices to
operate correctly. The following table identifies the frequencies used
for the upper and lower bands of operation:
• Lower: 902 - 915 MHz
• Upper: 915.1 - 928 MHz
These bands are selectable for each base station through dip switches
located on the back of the T7406 base station. Each base station
supports up to three handsets. Selection of the correct band for
operation may minimize interference between devices.
Operational Parameters
For example, with a configuration of six handsets, two base stations are
required (three handsets per base station). One base station will be set to
the upper band, and the other base station will be set to the lower band.